Vulcanizing press



April 13 19266 R. J. SCHMIDT VULGANIZING mass Filed Dec. 26,

1925 2 Sheets-Sheet l I N VEN TOR. Flaw/w .A ficzmmr A TTORNE Y.

5 2 Sheets-Sheet 2 INVENTOR.

ATTORNEY.

, F2. ,3. SCHMIDT VULCANIZING PRESS Filed DSC3 3 6, 192

PEI/4RD ISCHM/DT ing mechanism RICHARD J. SCHMIDT, F AKRQN, OHIO, A$SliG-NOR T0 THE AKRON EQUIPMENT 00M PAYNE, (Pl? AKRON, 03119, A GDRPGRATION GE OHIU,

votes-mains .dpplioation filed Becember'fw, 153%. Serial No. 'Z'LY'OQ.

To all whom it may concern.

it known that l, RICHARD J. Sorrranor, a citizen of the United States, and a resident of Akron, count-y'of Summit, 'State of Ohio,

e invented certain new and useful Imroller/"lug is a specification,

This in ention relates to the manufacture inner tubes or similar articles of rubber i cured in individual steam jaclo a press for this purpose which oer o'l' lcatures of novelty i. 7 nature of a timid a stationary and a n of which. attached mold The press is r 1,plc, quick operating lochcvice by which the two platens may be rely fastened after they are brought tomeans is readi y adjusted for varying sot niolds. Other obj ots oft-he invention are simplicity and ease of operation and design,

In the drawings in which one form of the invention is shown:

Figurel is a side elevation of a press cm hodying the invention, the press being shown in open position Figure :2 1s a plan view showing the lock- F igure 3 is a section on the line 33 of Figure 4, showing" the press in closed and locked position; and

Figuredis a plan sliowing'the position of the locking means.

The press comprises a stationary platen l which is supported at the upper ends of a plurality oi vertical rods 2 arising from a bed plate The bed plate is supported from the fioor by uprights. l. Slidably mounted on the rods 2 is the movable platen 5, which is moved hytlle ramdthe head of which operates in a cylindrical chamber 7 suspended from the bottom of the bed plate 3. The mm is operated by Water, air, or

other fluid under pressure.

vents in Vulcanizing Presses, of which.

either by a l'luid o crated ram. The lock- The stationary platen it carries upon its under side one member or section ll) of the mold, which is here illusti ted as a mold for inner tubes, being chambered for the irculation of steam. The movable plate ries the other section ll. of if e inoldi Each section is secured to A ion by bolts arranged in slots 13 in the respective pl tons.

The n'loyoble jolatcn is provided suitable number oi. adjusts. nests her shown as l'our in, number, oh, when the mold is closed, project tlu in the stationary ti er s 1, la is screw threaded st lomsr end for a considerable distance an is provided either side oi? the platen ll with nut-s 16, so

Each post i apertures 1e with thst the extent to which each post projects above the movable platen or its efieotive length may be accurately adj sized, The up per end of each post is provided with a transverse hole 17, the upper surface of which is slightly tapered as shown at 18, the location of the hole being suclrthan when the posts are properly adjusted and the lower or movable platen is at the upper'end of its movement the hole 17 will be located just above the stationary platen.

Arranged on the upper platen is a looking device which cooperates Withthe posts ll to secure the sections of the mold together. This consists of a series of bolts on keys 20 which are designed to slide in re dial slots formed on the upper surface of the platen l and to enter the holes 17 in the manner illustrated in Figure 3, the upper surfaces of the keys being tapered to corre spend With the tapers 18. The keys are pro -jected and withdrawn simultaneously by a sections are brought tightly together, whereupon the posts will project through the up per platen, the holes 17 beingin register with the sliding keys. The rmg 23 1s rotated and the keys are all projected through the holes in the posts, the tapered surfaces drawing the platens tightly together. The mold is now securel clamped and heat is admitted to the charm ered mold sections and the internal pressure to the tube, these being maintained for the period required to vulcanize the tube. Even should the pressure in the cylinder 7 fail, the lower platen can-' not fall. As the keys project through the holes 17 and are supported on both sides thereof, they must be sheared oil in order to fail. Obviously they can be easily constructed to withstand such action.

As long as one mold is used, the apparatus will work perfectly after the initial adjustment. Should the mold be changed and adjustment required, the posts 14 can-be adjusted for the new mold with very little effort. Accurate adjustment may be easily obtained by manipulation of the nuts 16 after the platens are brought together.

The piping for the chambered mold sections, the ram and the link have not been -described as they can be easily connected in any suitable manner.. Changes and modifications may also be made within the scopeof the invention as set forth in the claims. Other articles than inner tubes can be cured in the press shown herein with suitable changes in-the mold. The invention is not necessarily li. ;ited to vertically operating molds, but may applied torother types as will be understo '1 by those skilled in the art.

What is claimed is:

1. In an apparatus for the vulcanization of rubber goods, the combination of a sta- (ill tionary platen, a ram and a movable platen carried thereby, a mold section carried by each platen, a plurality of posts carried by one of the platens and adapted to project through the othe platen, and a pluralltyof keys movable into locking engagement with the posts to secure the platens together.

2. In an apparatus for, the vulcanization of rubber goods, the combination of a stationary platen, a ram and amovable platen carried thereby, a mold section carried by each platen, a plurality of posts carried by one of the platens and adapted to pro ect through the other platen, a plurality of platen, the keys being adapted to pass into locking engagement. with the posts, and a single actuating device for said keys.

4. In an apparatus for the vulcanization of rubber goods, the combination of a stationary platen and a movable platen, a ram for operating the movable platen, a mold section on each platen, a lurality of posts on one'of said platens, sai posts projecting through the other platen when the mold sections are closed, means to adjust the eifective length of said posts, and keys slid ably carried by one platen and adapted to pass into locking engagement with the posts.

5. In anapparatus for the vulcanization of rubber goods, the combination of a stationary platen and a movable platen, a ram for operating the movable platen, a mold section" on each laten, a plurality of posts on one'of said p atens, said posts projecting through the other platen when the mold sections are closed, means to adjust the effective length of said posts, and keys slidably carried by one platen and adapted to engage the posts, the keys and the apertures having correspondingly tapered surfaces.

'6. In an apparatus for the vulcanization. of rubber goods, the combination of a stationary platen and a movable platen, a ram for'operating the movable platen, a mold section on each tplaten, a plurality of posts on one of said platens, said posts projecting through the other platen when the mold sections are closed, means to adjust the effective length of said posts, keys slidably carried by one platen and adapted to engage the posts, and means to operate said bolts in unison. v

7. In an apparatus for the vulcanization of rubber goods, the combination of a stationary platen and a movable platen, a ram for operating the movable platen, a mold section on each platen, a plurality of posts on one of said platens, said posts projecting through the other platen when the mold sections are closed, means to adjust the efi'ective length of said posts, keys slidably. carried by one platen and adapted to enter apertures in the posts, the keys and the apertures having correspondingly tapered surfaces, and means to' operate said bolts in unison.

memee 8,1lsneppemlus 0f the character Llescilbed, comprising an upper stationery platen and a; lower movable platen, a. mold section carried by eaeh platen, a series elf posts carried by the lnbveble platen and adapted to prqect through the statwnary platen, ad ustment means fer varymg the extent of said posts afbeve the movable plat-- en, a plurality of radial sliding keys on the stationary platen, a central rotatable 10 ring, and links connecting the ring and the keys, the keys being received within apervim-es in the posts when projected outwardly.

RICHARD J. SCH lllllD'l. 

